Separable fastener.



e. SUNDBACIK.

SEPAHABLE FASTENER. APPLICATION -HLED APR. 6. 1915.

1,243,458. 1 Patented Oct. 16, 1917.

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- UNITED srATns PATENT orrron,

emnoN SUNDBACK, or mnanvrmln, PENNSYLVANIA, AssisNon 'ro nooxnnss rasrnnnn GOMPANY,

A GORPORATIEON OF PENNSYLVANIA.

' snrnnannn ras'rnNnnf Application fled Apri16, 1915. Serial No. 19,474.

To all whom it may concern: Be it known that subject of the King of Sweden, residing at Meadville, in the county of Crawford and State of Pennsylvania, have invented certain new and useful Improvements in Separable Fasteners, of which the following is a full, clear, and exact specification.

This invention relates to separable fasteners, and has particular reference to that type of fastener for garments and other purposes, where two flexible stringers carrying a similar members are locked and unlocked sliding cam device mounted on both members, the locking being efiected by movement in one direction and unlocking by an opposite movement.

The objects of the present invention are todecrease the weight and bulk, to increase the flexibility, and to insure certainty of locking. A further object of the invention is to simplify and improve the cam sliding device.

According to the present invention, the stringers are alike, as in some prior types of this fastener, preferably consisting as herein shown of a fabric tape provided with a beaded or corded edge, upon which the forming locking members are clamped. The locking members consist of :contractible jaw portions which are clamped upon the tape and projecting looking portions of transversely elongated conithat the outside of one member nests within the recess of an adjoining member when in locked relation. The invention particularly resides in the shape and configuration of the locking members to provide an adequate opening for the locking movement, so that liability of catching is avoided, and guiding theprojecting'part smoothly and easily into the locking recess. Thereby, a snug fit is obtained and at the same time ample provision is made for movement of one member relatively .to the other without disengaging when the fastener is flexed transversely or longitudinally.

In the accompanying drawings, Figure 1 is a perspective view of an enlarged scale of a fastener embodying the invention;

Fig. 2 is a ner of locking and unlocking; Fi 3 is a cross sectionon the line of Fig. 11;

Specification of Letters Patent.

1, GmEoN SUNDBAOK, a

. pense.

detail view showing the man- Patented Oct. 16, 191 7.

Fig. 4 is a detail view of one of the lockv ing members showing the recess;

Fig. 5 is a cross section thereofon the 1ine5-5 of Fig. 4;, I Fig. 6 is a detail view stringers;

' Fig. 7. is a cross section thereof;

' Fig. 8 is a cross section of the slider, and

Fig. 9 is an enlarged detail of the locking members.

l1 represents stringers which preferably will be made of woven tape having sewed thereto on opposite sides braided or twisted cords 2 -2 to form a beaded edge. The cords preferred are twisted, and are sewed oppositely on each tape, so that the back twist of one tending to twist or pucker the tape, neutralizes that of the other. This construction? enables twisted cords to be used instead of braided cords Ihave also employed, at a considerable saving in exof one of the composed of a tape having oppositely attached braided or twisted cords, the tape is not cut by the interlocking members he hind the cords. This has happened and been a source of trouble andexpense where asingle cord has been inclosed or woven within the tape. 7

In manufacturing these stringers having a cord sewed on each edge, the cords are fed slower than "the tape so as to be shorter, When the forming a wavy strlnger. jaws are clamped thereon, this shorter edge elongates so as to almost equal the back. edge of the stringer. A contraction of the stringer takes place when it is sewed by machine to the garment, so I prefer to make By this construction of stringer the cord considerably shorter than the stringer, as thereby a fiat placket will be obtained. Also the stringers lie fiat without either puckering or twisting. i

'3 represents the line of stitching as em ployed in the preferred construction. Each of these stringers may be secured together at one end by connecting members 4 having jaws similar to those of the locking mem-' hers, and will have at the opposite end a stop member 5 also having similar jaws. These stop members 5 avoid unnecessary or clumsy projections, and do, not increase the thiclmess of the fastener. sliding cam. operating device, which consists of doubled stamped sides 7 each having a ered ann w h i sides S r- 6 represents the I arated to permit passage of the tape portion of the stringers 1. 8 represents a cap having a point to fit between the diverging I structure being provided when the cap 8 is applied thereto and the rivet 14 set.

Fig. at represents one of the hook or eye locking members, which consists of jaws 1717 having a base portion 9 which is stamped or otherwise formed to provide an external hook or locking projection 10 and an eye member internal recess 11. These members, as well as the locking members 4 and the stop members 5 are stamped out of flat metal, and the fiat jaws 17 17 of these several locking, stop, and connecting members are spread apart as shown in dotted lines in Fig. 4 so as to pass over the corded edges 2 of the stringers. Then the jaws are set by a punch or other suitable means, the

- jaws thereby becoming firmly .clamped to the stringers by the compression of the corded edges 2. This will be seen in Fig. 3.

where the corded edges have been distorted by the setting of the locking members thereon so as to completely fill the elongated slot in the locking members, and the jaws 17, 17 engaging firmly on the tape immediately behind the corded edges. This elongated slot enables the fastener to be thinner, and also lengthens the grip of the, jaws 'on the stringers against pivoting up and down, without affecting the flexibility through the slider.

Practical success -in a .fastener, of this character is largely dependent upon proper construction of the locking. members. Not only must these members remain engaged when the fastener is flexed transversely or one stringer moved longitudinally relatively but the locking members must.

to the. other, guide smoothly into and out of each other without liability of jamming on the slider or on each other, and must always lock without objectionable looseness. These objects are all obtained in the fastener of this invention, wherein not only are the locking members for both stringers lock easily and surely without jamming and yet provide the necessary flexibility. The members 10 are provided with opposite inclined iding surfaces 18, 21 and 20, 20,

the sur aces 21 being somewhat steeper, and

rounded at the corners so as tofit in the sockets 11 shown in Fig. 4. Theupper surfaces of the :locking projections are slightly rounded as shown and sockets as shown in Figs. 4 and 5. .Also the under alike, but they at 24, and the projections are also elongated transversely the jaws 17, as seen in Figs. 1, 2, and 4, so

edge 19, over which the rounded heads 24 i may slide in looking and unlocking. The angle of the guiding surface 18 conforms to the curve of' the slider, and this surface, in conjunction with the sharp edge 19, causes the adjacent members on the opposite stringers to ride one on the other, and guide each other, into proper locking engagement. Thereby catching is eliminated, and by reason of the members guiding each other into locking engagement, the radius of the slider channel can be increased. This is of advantage when the fastener is used on stiff garments such as corsets. The projections and, sockets fit closely, and thus render the dis tance between the jaws independent of their thickness, which enables proper locking to be secured with jaw membersthinner than the projections, and consequently more separated on the stringers. Greater spacing of the jaw members increases the flexibility, but without the elongated and conical shaped projections and recesses hereinshown, this increased flexibility would enable the mem-. bers to be easily disengaged by transverse bending.

By the present invention, an improved fastener has been produced which is much more simple and cheap to manufacture than others heretofore invented, because both stringers as well as the respective members thereon, are alike, and the members them-' selves can all be made by simple die operations from flat material. The only assembling operations are those required to attach the members to'the tapes. The finishing of the locking members such as smoothing or tumbling is very simple, because all are alike "and the dies can be so designed as not to require much subsequent finishing of' these members. I

Having thus described my invention, I declare that what I claim as new and desire to secure by Letters Patent, is

1. In a fastener, an interlocking member having a transversely rounded recess on one slde, and a transversely rounded projection on the opposite side extending from edge to edge of said member. X

2. In a fastener, an interlocking member having atransversely elongated recess on one side, jection on the opposite side extending from edge to edge of said member.

3. In a fastener, an interlocking member having a rounded recess on one side, and .a rounded projection on theopposite side continuous withthe outer edge of said member.

'4. In a fastener, an interlocking member having at one end a rounded recess on one side, and a rounded projection on the oppoand a transversely elongated prosurface beyond the recess, and said projec-' tion having an inclined end forming an edge with said guiding surface.

"5,. In a fastener, an interlocking member having at one end a transversely elongated attachment to a stringer having a 'projecting end and a supporting end, the lat ter comprising compressible jaws separated .by an elongated slot.

7. In a fastener, a stringer for carrying connecting members comprisinga tape, and cords attached thereto on opposite sides along one edge.

8. In a fastener, a stringer-for carrying connecting members comprlsmg a tape, and oppositely twisted cords attached thereto T member, said member having attaching means at the other end comprising'jaws" on opposite sides'along one edge. V v

'9. In a fastener, a stringer for carrymg connecting members comprising a tape, and cords sewedthereto on opposite sides along.

one edge. p

10..,In a fastener, a stringer for carrying connecting members comprising a tape, and

"oppositely twisted cords sewed thereto on opposite sides along one edge.

'11. In a fastener, a fabric stringer having a corded edge for carrying connecting mem-. bers, andjhaving its opposlte edge adapted for attachment to a device to be opened and closed,

corded edge shorter than fthe attachmg edge '12. Ina

'clamping'jaws at each end. v I I afiix my signa-.

' Witneses:

fastener, a for carrying connecting members comprising a tape, and oppositely twisted cords sewed thereto on opposite sides along one edge, the cords when attached being shorter thanthe' other edge of the tape. 1

13. In a fastener of'the class described,

a fabric stringer, a flatbody secured to the stringer and having an interlocking portion extending beyond the edge of the stringer,

the'body' having an elongated slotted por- V tion to receive the stringer andflat faced aws at the end of said slotted portion projecting toward each other.

14. In a fastener, a fabric stringer having a thickened inner edge for receiving compressible interlocking members, and an attaching outer edge, said outer edge being longer than the inner edge.

15. In a fastener, an interlocking memher having at one end a transverse recess on' one face and a corresponding projection oppositersaid recess having-"a continuous surface extending between the edges of-said having compressible separated clamping jaws at each end. i

17. In a fastener having a fabric stringer, a U-shaped stop'member havingseparated In testimony whereof ture, in presence of'two witnesses.

GIDEON SUN BAGK.

F'. M. Trrns, AL-em F. Bussnm.

DISCLAIMER 1,243,458.Gidaon Suadbcclc, Meadville, Pa. Snrmnnn Patent. dated tober 16,- 1917. .Disclaimer filed November 13, 1934, by the "as, HoaklasFasQenerCqmpany. Hominy this di gclaimar to claims 1, 2, 3,:md 15 of the snid'patent. lqficialGazdfa Deoembadfi, 1934.] 

